[swift-users] Removed discussions in doc for Swift 4. Why?

[tuuranton at tutanota.de]

From

https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/RevisionHistory.html#//apple_ref/doc/uid/TP40014097-CH40-ID459


"Removed discussion of variable function arguments and the special syntax for curried functions."

Why?


I tried variable function arguments and they seem to work fine in Xcode 9. Didn't try currying yet, however.

Are these features being phased out?

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